package lab6_3;

import java.util.Scanner;
class ArrayUtils{
	public static double findMax(double[] arr,int begin, int end) throws IllegalArgumentException{
		if(begin>=end){
			  throw new IllegalArgumentException("begin:"+begin+" >= "+"end:"+end);
		}
		else if(begin<0){
			  throw new IllegalArgumentException("begin:"+begin+" < 0");
		}
		else if(end>arr.length){
			  throw new IllegalArgumentException("end:"+end+" > arr.length");
		}
		double max=arr[begin];
		for(int i=begin+1;i<end;i++)
		{
			if(arr[i]>max)
				max=arr[i];
		}
		return max;
	}
}
public class Main {

	public static void main(String[] args) throws Exception {
		// TODO Auto-generated method stub
		Scanner sc=new Scanner(System.in);
		int n=sc.nextInt();
		double[] arr=new double[n];
		for(int i=0;i<n;i++){
			arr[i]=sc.nextDouble();
		}
		while(sc.hasNextInt()){
			int begin=sc.nextInt();
			int end=sc.nextInt();
			double max=0.0;
			try{
				max=ArrayUtils.findMax(arr, begin, end);
				System.out.println(max);
			}catch(IllegalArgumentException e)
			{
				System.out.println(e);
			}
		}
		try {
		     System.out.println(ArrayUtils.class.getDeclaredMethod("findMax", double[].class,int.class,int.class));
		} catch (Exception e1) {
		}
		
	}

}
